Transit timing observations from Kepler. VIII. Catalog of transit timing measurements of the first twelve quarters

Tsevi Mazeh, Gil Nachmani, Tomer Holczer, Daniel C. Fabrycky, Eric B. Ford, Roberto Sanchis-Ojeda, Gil Sokol, Jason F. Rowe, Shay Zucker, Eric Agol, Joshua A. Carter, Jack J. Lissauer, Elisa V. Quintana, Darin Ragozzine, Jason H. Steffen, William Welsh

Research output: Contribution to journalArticlepeer-review


Following the works of Ford et al. and Steffen et al. we derived the transit timing of 1960 Kepler objects of interest (KOIs) using the pre-search data conditioning light curves of the first twelve quarters of the Kepler data. For 721 KOIs with large enough signal-to-noise ratios, we obtained also the duration and depth of each transit. The results are presented as a catalog for the community to use. We derived a few statistics of our results that could be used to indicate significant variations. Including systems found by previous works, we have found 130 KOIs that showed highly significant times of transit variations (TTVs) and 13 that had short-period TTV modulations with small amplitudes. We consider two effects that could cause apparent periodic TTV - the finite sampling of the observations and the interference with the stellar activity, stellar spots in particular. We briefly discuss some statistical aspects of our detected TTVs. We show that the TTV period is correlated with the orbital period of the planet and with the TTV amplitude.

Original languageEnglish
Article number16
JournalAstrophysical Journal, Supplement Series
Issue number2
StatePublished - Oct 2013


  • planetary systems
  • planets and satellites: detection
  • techniques: miscellaneous
  • techniques: photometric

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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